Do you kneel to Mary and ask for her mediation between yourself and God?
What is wrong with kneeling? Have you ever knelt to pray? I've seen non-Catholics kneel to pray- are they worshiping the bible?
You do not seem to be able to differentiate between worshiping someone or something and showing a person honor and respect.
I most certainly do ask for Mary's help, and can attest to her powerful intercession. Have you ever asked anyone to pray for you? Obviously she does not take the place of the “One Mediator” Jesus.
I am reminded of Mary's role in the wedding at Cana, where Jesus turned water into wine on her behalf. Most imporantly, Catholics are very aware of her last words in the Gospel: “Do whatever He tell you”.